After his first start in Texas they started pitching him every 5th day no matter if he was up in the rotation or not. He logged 51.1 innings out of 54 his first six starts. Three of those were in the 90+ heat with 50% humidity at the Rangers ballpark. His ERA over those first 6 was 2.63 with record of 1-2 and team record of 3-3. His last 4 are all losers still skipping over others in the rotation and pitching every 5th day his ERA is 8.40 and 24-2/3 of 36 innings.
My point is he's being overworked and mismanaged. He is a fierce competitor who is learning that pitching in Texas is brutal because of the heat/humidity and they are burning this guy up.
He is still one of the top 3 pitchers in the league and I would be shocked if he stayed in Texas unless they do something really special in post-season.